The District of Opolian Silesia, also designated as the 1st District, was a district that acted as a provisional administrative division of Poland, during the administration of the Provisional Government of the Republic of Poland in 1945, and the Provisional Government of National Unity from 1945 to 1946. It was centered around the area of the Upper Silesia. It was established as one of four provisional districts on 14 March 1945,Stanisław Jackowiak: Trudny powrót do macierzy, Warsaw: Biuletyn Instytutu Pamięci Narodowej, 9-10/2005, ISSN 1641-9561.Andrzej Gawryszewski: Ludność Polski w XX wieku. Warsaw: Polska Akademia Nauk – Instytut Geografii i Przestrzennego Zagospodarowania im. Stanisława Leszczyckiego, 2005, series: Monografie. ISBN 83-87954-66-7. ISSN 1643-2312. p. 43. and existed until 28 June 1946, when it was abolished and incorporated into the Silesian Voivodeship.http://isap.sejm.gov.pl/isap.nsf/DocDetails.xsp?id=WDU19460280177 Journal of Laws, no. 28, position: 177, 1946. The head of the district was the attorney-in-fact of the government, Aleksander Zawadzki.
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